The document discusses the top 7 challenges of migrating from Magento 1 to Magento 2. These include: 1) data security and theft issues, 2) compatibility constraints as modifications made for one version cannot be used on the other, 3) potential drop in search engine optimization, 4) need to reintegrate plugins and develop new integrations, 5) potential performance issues during migration, 6) extensions that are not supported on Magento 2, and 7) themes that are not easily transferable between versions due to architectural differences. The document emphasizes that hiring an experienced Magento migration company can help overcome these challenges.